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6. HOW TO COMMUNICATE WITH ID TAGS
6.2.1 Read
6.2.2 Write
6.2.3 Fill data
6.2.4 Read UID
6.2.5 Measure noise
6.2.6 Read Initial Data Settings
6 - 3
The Read instruction reads data from the ID tag starting from the address specified in the
start address specification area (RWwm+1H), in an amount equivalent to the number of
bytes specified in the number of processed points specification area (RWwm+2H).
The read data is stored in the read data storage area 1 and thereafter (RWrm+3H and
*1
thereafter).
*1. For the read data storage area range, refer to Table 6.2.
The Write instruction writes data to the ID tag starting from the address specified in the
start address specification area (RWwm+1H), in an amount equivalent to the number
of bytes specified in the number of processed points specification area (RWwm+2H).
The data to be written is stored in the write data specification area 1 and thereafter
(RWwm+3H and thereafter).
*1. For the write data specification area range, refer to Table 6.2.
The Fill Data instruction writes the same data to the ID tag starting from the address
specified in the start address specification area (RWwm+1H), in an amount equivalent
to the number of byte sets specified in the number of processed points specification
area (RWwm+2H).
The data for executing Fill Data is stored in write data specification area 1 (RWwm+3H).
The Read UID instruction reads the UID (unit identification number; 8bytes) of the ID tag,
and stores the value in the read data storage areas 1 to 4 (RWrm+3H to RWrm+6H).
The Measure Noise instruction measures the noise environment surrounding the
antenna, and stores the average value, maximum value, and minimum value of the
measured data in the read data storage areas 1 to 3 (RWrm+3H to RWrm+5H).
Measured Data
RWrm+3H
Average value
RWrm+4H
Maximum value
RWrm+5H
Minimum value
The Read Initial Data Settings instruction reads the communication specification,
communication setting, processing specification, and auto system command wait type
setting set in the RFID interface module, and stores the values in the read data storage
areas 1 to 4 (RWrm+3H to RWrm+6H).
RWrm+3H
RWrm+4H
RWrm+5H
RWrm+6H
Auto system command wait time setting
*1
"C0H"+"00H" to "99H" [BCD]
"C0H"+"00H" to "99H" [BCD]
"C0H"+"00H" to "99H" [BCD]
Communication specification
Communication setting
Processing specification
6 - 3
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